Automatic furnace-stoker.



s. A. KOHOUT.

AUTOMATIC FURNACE STOKER.

APPLICATION FILED APR. 30. 1915.

Patented Apr. 10, 1917.

3 SHEETS-SHEET l.

G. A. KOHOUT.

AUTOMATIC FURNACE STOKER.

APPLICATION FILED APR. 30.1915- 7 1,222, 109,, Patented Apr. 10, 1917.

3 SHEETSSHEET 2 G. A. KOHOUT.

AUTOMATICVFURNACE STOKER.

APPLICATION FILED APR. 30. I915.

Patentqd Apr; 10, 1917.

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GEORGE A. KOHOU'I, OF CHICAGO, ILLINOIS, ASSIGNOR '10 KEBSTO CORPORATION, OF

CHICAGO, ILLINOIS.

AUTOMATIC FUBNACE-STOKER.

memos.

To all whom it may concern;

I Be it known that I, Gnonen A. KOHOUT, a citizen of the United States, residing at .Chicago, in the county of Cook andState of Illinois, have invented a certain new and useful Improvement in Automatic Furnace- Stokers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawin s, forming a part of this specification.

lily invention relates to automatic furnace stokers and has for its object the provision of a new and improved structure for automatically periodically feeding fuel to a furnace. The structure furthermore is of such character that it secures an even distribution of the fuel throughout the grate surface.

In one form of the structure I utilize a deflector plate or surface in the path of the fuel as it is thrown into the furnace.

I provide certain mechanism to throw the fuel, and then I provide certain measuring mechanism which preferably deposits different quantities of fuel in front of the throwing device as to change thereby the distance that the fuel is thrown, thus to deposit it seriatim over the near and far portlons of the grate.

I provide suitable agitatin devices to prevent clogging of the fuel an I provide imroved mechanism for throwing the deposlted fuel into the fire.

I will explain my invention more in detail by referring to the accompanying drawings illustrating one embodiment thereof, in which Figure 1 is a side view partially insection of my device as applied to a furnace;

Fig. 2 is a top view of the mechanism showing the furnace walls in section;

Fig.- 3 is an enlarged view similar to Fig. 1 illustrating details of construction Fig. 4 is a sectional view on line a of Fig. 2;

Fig. 5 is a front view of the structure, a portion thereof being in section along line b of Fig. 6, and

Fig. 6 is a top view of the mechanism, a portion thereof being in section along line 0 of Fig. 5.

Referring more particularly to the draw. ings, I show a furnace 1 having a grate 2,

an ash door 3 and the customary firing door Specification of Letters IPatent.

- Patented Apr. it), 191?.

Application filed April 80, 1915. Serial No. 24,9 13.

.4. My improved device is mounted in place in the furnace as thus illustrated, only a small part of the door being cut-away to permit of the entrance of the feeding structure. The structure is, as is apparent from the illustrations, entirely self-contained and mounted upon the furnace by means of the bolts 5, 5.

Referring particularly to Fig. 1, it is seen that this stoker has at its forward extremity a deflecting plate 6 a ainst which the fuel is thrown, thence to re ound along the dotted lines shown in Fig. 2 to its place upon the grate bars 2. The stoker comprises also a large hopper 7 which is continually full of fuel. Within the hopper or rather the lower portion thereof I provide a plurality of agitators 8 suitably mounted upon a shaft 9 and driven from the main driving shaft 10 in any suitable manner. The hopper 7 is closed at its lower extremity bv rotatable feeding plates 11 which are mounted upon a counter-shaft 12. A flat plate 13 is interposed between the feed disks 11 so as to form pairs of pockets 14, 15.

It will be seenmore particularly by referring to Figs. 4. and 5 that while the pockets of each pair are of the same size preferably, the pockets of another pair are of a different size. It will be understood likewise that while there may be shown only two pairs of pockets that more pairs may be used. The

object of making the pockets of unlike size ties of fuel through the structure and deposit them within a cylinder 18 also formmg part of .the stoker structure. Within this cylinder 18 is mounted a piston 19 preferably hollow but having a closed head 20. This piston is periodically moved back'and forth within the cylinder by mechanism presently to be described, this piston having a recoil mounting thereby to project, throw or catapult the deposited fuel out of the left hand extremity of said cylinder (Fig. 4) .against the deflector plate 6, from there to The fuel as be distributed over the grate. it passes from the pockets into the cylinder passes through a chamber 21 within which a suitable agitator 22 is rotatably mounted.

This agitator is suitably driven by the chain 7 23 as is readily apparent from the illustra-.

- said charge receptacle, and a universally tions.

The piston 19 has fixedly secured to it a transverse stem 24 slidable within grooves 25 provided in the cylinder Walls. This stem is rigidly fastened at its opposite extremities to two plates 26, 26, which plates carry rollers 27 slidable in grooves 28. These plates are each provided with teeth 29 and 30 respectively .adapted to be engaged by pins 31 and 32 carried by driving disks 33. The driving disks 33 are suitably mounted upon the driving shaft 10 and when they are rotated engage successively through the agency of their pins 31 and 32 the teeth 29 and 30, thus to slide the plates 26 and their attached piston 19 to the right hand extremity of its stroke (Figs. 3 and 4). Immediately the pin 32 releases itself from the .tooth 30, springs 34 come into play to violently project the piston 19 to the left (Figs. 3 and 4), thus to discharge the fuel deposited within the cylinder. A buffer plate .35 is provided to relieve the structure from shocks.

As will be seen the deflecting plates 6 are universally adjustable by means of their pivotal mounting 36 upon a pivotally mounted stud 37. These studs 37 are then rotatably mounted upon brackets 38, which brackets are fixedly secured to the structure by the set screws 39. The double pivotal mounting 40-thus provides a practically universal adjustment. The deflecting or bafiie plates 6 are thus capable of universal adjustment so as to vary the length of throw and also to vary the distribution over the grate.

It will of course be understood that the auxiliary crusher 40 which is mounted within the hopper 7 may be used to crush the fuel should such be found necessary. The driving shaft 10 which controls the operations of the entire device may'be suitably connected to an engine 'or motor whose "speed of operation may be proportional for instance to the steam pressure or other vari-' able function as maybe desired, thus to render the operations of the device practically automatic in accordance withthe requirements of the furnace.

From what has been thus. described the nature of my invention will be readily clear to those skilled in the art. Having however thus described one form which my invention may take, what I claim as new and desire to secure by Letters Patent is:

1. An automatic stoker having a fuel reservoir, a charge receptacle, movable means for feeding fuel from said reservoir to said charge receptacle, said feeding means including a plurality of different sized pockets, a piston for discharging said fuel from cluding a plurality of different sized pockets,

spring controlled means for discharging said fuel from said charge receptacle, and a universally adjustable deflecting plate in the path of said discharged fuel, said spring controlled means including a piston, recoil springs for said piston, a cam plate movable with said piston, and driving means for actuating said cam plate.

4. An automatic stoker having a fuel reservoir, a charge receptacle, means for feed ing different predetermined'amounts of fuel from said reservoir to said receptacle, a piston for discharging said fuel from said receptacle, and a deflecting plate in the path of said discharged fuel.

5. An automatic stoker having a fuel reservoir, a charge receptacle, means for depositing diiferent predetermined amounts of fuel from said reservoir to said charge receptacle, and a piston having a uniform stroke for discharging said fuel from said charge receptacle, the distance of throw depending upon the amount of deposited fuel.

6. An automatic stoker having a fuel reservoir, a charge receptacle, movable means for feeding fuel from said reservoir to said charge receptacle, said feeding means including a plurality of different sized pockets, and a piston for discharging said fuel from said charge receptacle.

In witness whereof, I hereunto subscribe my name this 27th day of April, A. D., 1915.

GEORGE A. KOHOUT.

Witnesses:

Max W. ZABEL, HAZEL A. Jonas.- 

